IB/uverbs: Do not use uverbs_cmd_mask in the ioctl path

Instead we are now checking the function pointers directly. Get rid of
both cases in ioctl and drop the nonsense idea that destroy can fail.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>

drivers/infiniband/core/uverbs_std_types_cq.c

@@ -70,7 +70,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_CREATE)(struct ib_device *ib_dev,
 	struct ib_uverbs_completion_event_file    *ev_file = NULL;
 	struct ib_uobject *ev_file_uobj;
 
-	if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_CREATE_CQ))
+	if (!ib_dev->create_cq || !ib_dev->destroy_cq)
 		return -EOPNOTSUPP;
 
 	ret = uverbs_copy_from(&attr.comp_vector, attrs,
@@ -185,9 +185,6 @@ static int UVERBS_HANDLER(UVERBS_METHOD_CQ_DESTROY)(struct ib_device *ib_dev,
 
 	obj = container_of(uobj, struct ib_ucq_object, uobject);
 
-	if (!(ib_dev->uverbs_cmd_mask & 1ULL << IB_USER_VERBS_CMD_DESTROY_CQ))
-		return -EOPNOTSUPP;
-
 	ret = rdma_explicit_destroy(uobj);
 	if (ret)
 		return ret;